Bind og DNS problem

Når mit bind9 køre, så har jeg lidt problemer med at nettet virker 100%. Nogen sider virker fint, mens andre slet ikke virker. Mailen virker således heller ikke. Hvis jeg så stopper bind9 så virker det hele fint igen.

named.conf

// This is the primary configuration file for the BIND DNS server named.
//
// Please read /usr/share/doc/bind9/README.Debian for information on the
// structure of BIND configuration files in Debian, *BEFORE* you customize
// this configuration file.
//

options {
    directory "/etc/bind";

    // If there is a firewall between you and nameservers you want
    // to talk to, you might need to uncomment the query-source
    // directive below.  Previous versions of BIND always asked
    // questions using port 53, but BIND 8.1 and later use an unprivileged
    // port by default.

    query-source address * port 53;

    // If your ISP provided one or more IP addresses for stable
    // nameservers, you probably want to use them as forwarders. 
    // Uncomment the following block, and insert the addresses replacing
    // the all-0's placeholder.

    forwarders {
        194.239.134.83;
        193.162.153.164;
    };
   
    auth-nxdomain no;    # conform to RFC1035

};

// prime the server with knowledge of the root servers
zone "." {
    type hint;
    file "/etc/bind/db.root";
};

// be authoritative for the localhost forward and reverse zones, and for
// broadcast zones as per RFC 1912

zone "localhost" {
    type master;
    file "/etc/bind/db.local";
};

zone "127.in-addr.arpa" {
    type master;
    file "/etc/bind/db.127";
};

zone "0.in-addr.arpa" {
    type master;
    file "/etc/bind/db.0";
};

zone "255.in-addr.arpa" {
    type master;
    file "/etc/bind/db.255";
};

zone "knotbox.dk" {
    type master;
    file "/etc/bind/knotbox.dk";
};

zone "192.in-addr.arpa" {
    type master;
    file "/etc/bind/db.192";
};